'High end' optical performance and value
The GS series takes the two size model range concept on a stage by increasing the 65mm OG model to a 66.5mm and the 80mm OG model to an 81.5mm without any noticeable gain in size or weight. The GS 815 GA gains 4% surface area over a standard 80mm OGt. The increase in the amount of light entering the instruments results in significantly higher levels of optical clarity over preceding models. Images are extremely bright whilst retaining excellent colour saturation so important for accurate identification.

Usability
'Ease of use' and 'functionality' are all important when using an instrument in the field and the GS series is designed to provide class winning optical performance seamlessly in an array of different outdoor conditions.

As telescopes need to be used with a solid tripod for image stability, any weight saving is crucially important. Constructed using lightweight materials where at all possible, the GS 815 weighs under 1000g. GS Fieldscopes are protected by 'full body' natural rubber armour with a textured finish to the top half of the main body prism housing. The centrally positioned focusing wheel allows easy access for both right and left handed users and is also rubber covered - delivering a positive feel with or without gloves.

The focusing system is designed to allow adjustment from infinity to 50 metres in just a 270° turn. Housed within the same mechanism for convenience is a 9:1 ratio accurate focus adjustment.

Included in this offer is the superb HDF 20x-60 zoom eyepiece.